*{
    margin: 0;
    padding: 0;
}
.container{
    position: relative;
    width: 320px;
    height: 480px;
    position: relative;
    background: url('images/game_bg.jpg') no-repeat 0 0;
    margin: 50px auto;
}
.container h1{
    color: white;
    margin-left: 60px;

}
.progress{
   width: 180px;
   height: 16px;
   background: url('images/progress.png') no-repeat 0 0;
   position: absolute;
   top: 66px;
   left: 63px;
}
.start{
    width: 150px;
    height: 35px;
    border-radius: 10px;
    background: linear-gradient(#E55C3D,#C50000);
    color: white;
    font-size: 20px;
    line-height: 35px;
    text-align: center;
    position: absolute;
    bottom: 130px;
    left: 50%;
    margin-left: -75px;
    border: 0;
}
.rules{
    width: 100%;
    height: 30px;
    line-height: 30px;
    background: gray;
    color: white;
    line-height: 30px;
    position: absolute;
    bottom: 0;
    text-align: center;
    cursor: pointer;
}
.rule{
    width: 100%;
    height: 480px;
    position: absolute;
    left: 0;
    top: 0;
    background: rgba(0,0,0,0.5);
    padding-top: 100px;
    box-sizing: border-box;
    text-align: center;
    color: white;
    font-size: 16px;
    display: none;
}
.rule p{
    margin-bottom: 30px;
}

.rule a{
    color: red;
    text-decoration: none;
}
.mask{
    width: 100%;
    height: 480px;
    position: absolute;
    left: 0;
    top: 0;
    background: rgba(0,0,0,0.5);
    padding-top: 200px;
    box-sizing: border-box;
    display: none;
}
.mask h1{
    color: #ff4500;
    text-shadow: 3px 3px 0 #fff;

}
.mask button{
    width: 150px;
    height: 35px;
    border-radius: 10px;
    background:linear-gradient(#74ACCF,#007DDC);
    color: white;
    font-size: 20px;
    line-height: 35px;
    text-align: center;
    position: absolute;
    bottom: 130px;
    left: 50%;
    margin-left: -75px;
    border: 0;

}